APA (7th ed.) Citation

Caldwell, B. E., & Howell, R. W. (1973). Soybeans: Improvement, production, and uses. American Society of Agronomy.

Chicago Style (17th ed.) Citation

Caldwell, B. E., and Robert W. Howell. Soybeans: Improvement, Production, and Uses. Madison, Wis.: American Society of Agronomy, 1973.

MLA (9th ed.) Citation

Caldwell, B. E., and Robert W. Howell. Soybeans: Improvement, Production, and Uses. American Society of Agronomy, 1973.